Original Season Finale

The episode was good till the ending, I didn't understand it. Why would he take that route? He wasn't found out and he just left Harrison with Hannah who also isn't wrapped very tight,when he could have left him with Rita's parents. Seems like he did alot of work to get away with at least 100 killings just to end up being wanted for taking Deb of life support when he probably had power of attorney anyway. Great show though!!